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Discussion Starter #1
Hi, I have just bought my t4 with the 2.5tdi engine. Basically my garage has told me the engine will wind forward manually but not backwards. If anyone has had issues with this in the past I would be very grateful with any input. I bought the van as a none runner from my local garage who I trust completely as I use them to repair all the cars I sell (forgot to mention in my spare time I'm a partner in a car dealers in between being a self employed joiner)
thanks
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Discussion Starter #5
Hi. thanks for the replies I think it turns forward freely but won't budge backwards It has been suggested that it might be a tooth on one of the cogs that work the timing has broken,
cheers
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Discussion Starter #7
I don't know if this is the correct info I have got but I have been told that it isn't a timing belt issue as such as the timing is done by a series of gears/cogs and not an actual belt for this particular model of engine its an acv engine and I'm almost certain the garage would have told me if he thought the belt had snapped. I'm getting the engine removed and re-built but was wondering if anyone had came across this problem.
thanks
again
 

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There is a timing belt that drives the cam shaft, and a second belt from that drives the fuel injection.
Only thing I can think of enginewise is that perhaps the camshaft has snapped and engine wont turn the other way.
Possibility that the vacuum pump when in desperate need of an overhaul known to get very clacky/tappety (driven by the cam shaft) and vibration takes its toll.

If they dont know how the cam is driven anticipate problems down-stream as they WILL need electronics to set up timing once they get it to run with manual set-up.
 

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I don't know if this is the correct info I have got but I have been told that it isn't a timing belt issue as such as the timing is done by a series of gears/cogs and not an actual belt for this particular model of engine its an acv engine and I'm almost certain the garage would have told me if he thought the belt had snapped. I'm getting the engine removed and re-built but was wondering if anyone had came across this problem.
thanks
again
GO TO ANOTHER GARAGE!
They have NO idea what they are talking about....unless someone has tried to build a strange hybrid engine! :eek:

BELTS....
The "gears and cogs" drive the belts....which break if not changed at the service intervals.
They must be living in the 60's if they assume it is all cogs!
 

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Discussion Starter #11
hi, the garage I use are more than capable to sort this issue out and have all the up to date equipment to deal with almost any engine and they have my total confidence when coming to fix this problem, perhaps I'm not explaining what I was told correctly but as I asked more than one garage about this issue and they also said something about gears at the back of the engine I can't be talking total !!
The reason I'm getting the engine re-built is purely down to the fact that it has done over 250k miles and don't want any issues with reliability ruining valuable weekends away with my wife and myself.
I only posted this thread on the off chance someone with more experience in t4 transporters had come across similar problems and could offer some constructive input. I am a novice in these particular vehicles but certainly didn't just arrive from another planet yesterday.

thanks
mick778
 

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hi, the garage I use are more than capable to sort this issue out and have all the up to date equipment to deal with almost any engine and they have my total confidence when coming to fix this problem, perhaps I'm not explaining what I was told correctly but as I asked more than one garage about this issue and they also said something about gears at the back of the engine I can't be talking total !!
The reason I'm getting the engine re-built is purely down to the fact that it has done over 250k miles and don't want any issues with reliability ruining valuable weekends away with my wife and myself.
I only posted this thread on the off chance someone with more experience in t4 transporters had come across similar problems and could offer some constructive input. I am a novice in these particular vehicles but certainly didn't just arrive from another planet yesterday.

thanks
mick778
As said it's belt driven, and experience of this engine is critical; or you could easily be back to square one.

Your loyalty is admirable, I just hope it is not misplaced; regardless of which planet you may have arrived from ;)
 

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WE ALL have more experience...and NONE of us know of an acv engine that has gear driven timing!

You asked for advice....so take it and go to a garage that has at least some clue about these engines!!!!

Quote;
I only posted this thread on the off chance someone with more experience in t4 transporters had come across similar problems and could offer some constructive input.

And you got it....but if you choose to ignore it, that's your problem, not ours!

Your engine will probably need a rebuild, but having it done by someone who wants to change the "gear/cog" drives on it is like saying you'll take it to Kellogs so they can put some new flakes in it.

If you don't want to take note of over 20 experience in these vans....so be it!:eek:

As a self proclaimed "novice", your attitude is coming across as someone who just doesn't care what the "experts" say!
 

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I'm wondering now ahould I take my van to Kellogs for new flakes or just keep using suger puffs ? Really confused now as the garage I use told me my gear box is full of springs and pins ?
 

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Discussion Starter #16
Lol ok point taken apologies for the earlier rant I will take on board any advice given .

Sent from my SM-G903F using Tapatalk
 

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In the garage defence, the later PD 2.5 tdi is using cogs to drive the timing however you mentioned ACV engine which is belt driven as mentioned above. As gazm said, timing is quite a delicate job on this and best left to a specialist- it's rather involved job and needs few special tools which not all garages have ! Locking the cam and setting timing of the injector pump is rather fidly and require a few tries even for experts ! I will rather pay someone to do it right first time than let someone practice/have a go at it and pay for privilege ! These engines are interference and as such can bend valves and break lifters. Whilst you there throw a new set of pd lifters, head gasket and upgrade head bolts to PD 150 spec. You will need a quality cam if it's snapped and make sure you let the garage know what you want ! I have worked on these for years and I know what I am talking about...
 

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Discussion Starter #18
Thanks adamss for the great advice if you have anymore ideas about the engine I would be very happy to hear it. As I just got the van on Saturday I have a million and one things I want to do i.e convert to a camper which being a joiner I think I'm capable of doing to a decent standard but as for boosting engine power,improving ride comfort and stance I can dowith all the help I can get
cheers
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It may be an advantage to give your location as other than ..GB ..!! Someone will most likely point you to a specialist local to you , to help with issues ..
 
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